Add 18/8 and 90/81
1st number: 2 2/8, 2nd number: 1 9/81
18/8 + 90/81 is 121/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 8 × 81 = 648,
18/8 = 18 × 81/8 × 81 = 1458/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
90/81 = 90 × 8/81 × 8 = 720/648 - Add the two like fractions:
1458/648 + 720/648 = 1458 + 720/648 = 2178/648 - 2178/648 simplified gives 121/36
- So, 18/8 + 90/81 = 121/36
In mixed form: 313/36
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